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#include <bits/stdc++.h>
using namespace std;
int n,k,x[30],f[30];
ifstream fin("combinari.in");
ofstream fout("combinari.out");
void back(int poz){
if(poz==k+1){
for(int i=1;i<=k;i++)
fout<<x[i]<<" ";
fout<<'\n';
}
else{
for(int i=x[poz-1]+1;i<=n;i++)
if(!f[i]){
f[i]=1;
x[poz]=i;
back(poz+1);
f[i]=0;
}
}
}
int main(){
fin>>n>>k;
back(1);
return 0;
}